Q: I've lost something significant in my life. Is there any possible way to get it back?
A: Hmmm. I'm going to say no. You've lost it right? So, being 5, I'm going to assume that you don't remember where you put it, or it doesn't remember where you left it, or it's gone on purpose, or it doesn't exist anymore for whatever reason.
Hate to be the bearer of bad news, only bad really because you said it was significant. If it was a thing, that's OK, because there are lots of things that you can get to occupy your time. If it was a girlfriend or boyfriend, then that's a whole other ball of wax. If they are gone, see if you can't get them back. If they are gone gone, then they are gone gone. If that's the case, I'd go somewhere and buy a new Barbie Doll. Somehow, they seem to have all the answers. At any rate, I wish I could get you back what you lost, but I cannot.
I do know that your life itself is significant, so hang on to it for as long as you can and live life to its fullest. Because next thing you know, someone will be buying a Barbie in your place...and the thing that you lost now will have wanted you to live, love, and laugh. Unless it was a marble or something.
It wasn't your marbles was it? Sorry...couldn't resist.
Peace Out!